<dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml</artifactId>
      <version>3.8</version>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-scratchpad</artifactId>
      <version>3.8</version>
    </dependency>

public BaseResp getParsedTxt(MultipartFile file) throws Exception {
    BaseResp br=new BaseResp("200","") ;
    String textType = file.getContentType();
    String txt = "";
    if(textType.equals(TXT_TYPE)){
      String code = getCharset(file);
      txt = new String(file.getBytes(),code);
    }else if(textType.equals(DOC_TYPE)){
      HWPFDocument doc = new HWPFDocument(file.getInputStream());
      Range rang = doc.getRange();
      txt = rang.text();
      System.out.println(txt);
    }else if(textType.equals(DOCX_TYPE)){
      File uFile = new File("tempFile.docx");
      if(!uFile.exists()){
        uFile.createNewFile();
      }
      FileCopyUtils.copy(file.getBytes(), uFile);
      OPCPackage opcPackage = POIXMLDocument.openPackage("tempFile.docx");
      POIXMLTextExtractor extractor = new XWPFWordExtractor(opcPackage);
      txt= extractor.getText();
      uFile.delete();
    }else{
      br = new BaseResp("300","上傳文件格式錯誤，請上傳.txt或者.docx");
      return br;
    }
    br.setDatas(txt);
    return br;
  }